Further study details as provided by National Taiwan University Hospital:

Primary Outcome Measures:

Skin pigmentation extent

Secondary Outcome Measures:

blood anti-oxidant level

Estimated Enrollment:

40

Study Start Date:

November 2005

Detailed Description:

Melanogenesis is caused by enzymatic conversion of tyrosine to melanin pigments.Ascorbic acid has the ability to inhibit peroxidase and may thus inhibit melanin synthesis.

Eligibility

Ages Eligible for Study:

20 Years to 80 Years (Adult, Senior)

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

chronic hemodialysis patients

Exclusion Criteria:

allergic to vitamin C, using steroid, etc

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00172302